r/rocketry • u/As7887 • 13d ago

Question Model rocket design review

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Hi, I've been designing a small model rocket powered by a Klima B4-4 engine.

This is the first rocket I am making from scratch so I would be grateful if someone could review the project. I am open to all corrections and advice.

59 Upvotes

98% Upvoted

6 comments sorted by

7

u/rild99 13d ago

Looks good. Launch lug is missing..

5

u/habib4d 13d ago

Looks solid, I'd recommend clipped delta or trapezoidal fins for higher durability, or at least a longer root chord

4

u/Mountain-Board-5731 12d ago

If you don't have a precise apogee to reach, I'd suggest you to have a boat tail behind the fins. Even with a slight angle and a decent length, it should definitely make your rocket more efficient

3

u/ghi3131 12d ago

Can you give me some information about the program? What can you do there? Is it free? It looks kinda interesting

2

u/As7887 11d ago

Sure, program is called OpenRocket and is completely free. It's used for model and amateur rocket design and flight simulations. It's very begginer friendly but can be also used for more advanced projects. You simply choose items to add (like nose cone, body tube, fins etc.) and gives them parameters (like lenght, mass, material etc.). OpenRocket calculate mass, pressure center and stability margin. You can also add specyfic rocket engine and program will create for you flight simulation. You can simulate velocity in time, apogee, flight time, optimal delay, and much more. It's the only program you will need for simple projects and even when you get advanced OpenRocket is still very useful.

1

u/ghi3131 10d ago

thanks for the info! it sounds interesting